Better Battery Status Messages in v1.0.8b

After several smart 451EDs turned into “bricks” after a low-voltage battery failure went undetected for some period of time, I added a few more diagnostic error messages about the status of the low-voltage (12 Volt) battery.

I also added a small bit of diagnostics around the balance across the cells of the traction battery in the car.

As always, the updates are free and can be applied using free tools as detailed in the Upgrading post.

There are no functionality changes in this version, so you can perfectly well use a v1.0.7 to diagnose your low-voltage battery. All this version does is do some plain-English interpretation of the voltages measured.

Also note that the voltages reported by the car’s on-board system via the test unit are consistently low as compared to using an actual meter. This means that you should confirm any low reading with a multi-meter before concluding that a battery replacement is warranted. These measurements should be considered imprecise but directionally correct.